~ 1142 ~ Journal of Entomology and Zoology Studies 2018; 6(4): 1142-1145 E-ISSN: 2320-7078 P-ISSN: 2349-6800 JEZS 2018; 6(4): 1142-1145 © 2018 JEZS Received: 11-05-2018 Accepted: 13-06-2018 Sujit Kumar Karmakar Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Snigdha Samanta Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Koushik Sen Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Arpana Manger Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Gayatri Kumari Padhi Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Umesh Das Uttar Banga Krishi Viswavidyalaya, Cooch Behar, West Bengal, India Arunava Samanta Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Correspondence Snigdha Samanta Department of Agricultural Entomology, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, India Bio-pesticidal management of brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.) Sujit Kumar Karmakar, Snigdha Samanta, Koushik Sen, Arpana Manger, Gayatri Kumari Padhi, Umesh Das And Arunava Samanta Abstract Field investigation was conducted to evaluate the efficacy of some biopesticides against shoot and fruit borer (Leucinodes orbonalis Guen.) on brinjal during Rabi season in 2015-2016. Among the treatments, Azadirachtin 1% EC @ 2ml/L was found superior than other treatments with 10.92% mean shoot infestation and 10.04% mean fruit infestation, respectively followed by Karanjin 2% EC @ 2ml/L (13.42% shoot and 12.83% fruit infestation). Azadirachtin 1% EC @ 2ml/L also registered as highest marketable fruit yield (38.75 q/ha). It can be concluded that Azadirachtin could be proved effective in the management of brinjal shoot and fruit borer under organic farming and IPM programmes. Keywords: Biopesticides, efficacy, brinjal, Leucinodes orbonalis 1. Introduction Vegetables are important constituents of Indian agriculture and nutritional security due to their short duration, high yield, nutritional richness, economic viability and ability to generate on- farm and off- farm employment [8] . Among the vegetable grown in India, Eggplant ( Solanum melongena L.) is the most popular and economically important vegetable in Asia. Brinjal is one of the three most important vegetable species cultivated in South Asian region (India, Bangladesh, Nepal and Sri Lanka) accounting for almost 50% of the worlds area under its cultivation [1] . As per statistics [4] , China is the top producer (58% of world output) while India ranks second (25%) in brinjal production. Insect pests are one of the important biotic factors which greatly affect the quality and productivity of brinjal crop through inflicting a direct damage [5] . In the tropics, brinjal production is severely affected by several insect and mite pests. The quit essential insect pests of brinjal include fruit and shoot borer (BSFB), whitefly, leafhopper, thrips, aphid, spotted beetles, leaf roller, stem borer, blister beetle, red spider mite, etc. [2] . Whitefly (Bemicia tabaci) and shoot and fruit borer (Leucinodes orbonalis) are the two destructive pests of brinjal causing substantial yield loss. Infestation due to this pest recorded 4.33 to 6.54 per cent shoot damage and 52.3 per cent fruit damage irrespective of the plantings month [7] . The loss caused by this pest was estimated to range from, 70-92 per cent in the fruit yield [6] . Therefore, without proper plant protection it is impossible to maintain the balance between enormous population and increasing demand of food. Though we are adopting various plant protection technologies but nothing is long lasting and ultimately farmer community rely on pesticides to protect their crops. In terms of monetary value, the Indian agriculture currently sets back at an annual loss of about Rs. 8, 63,884 million due to insect pests [3] . The use of synthetic chemical pesticides had been the widely used approach for reducing the estimated 45% gross crop loss due to pests and diseases, amounting to around Rs. 290 billion per annum. More and more quantities of chemicals are used for agricultural intensification to feed an ever growing population. In fact, the pest induced loss is on the rise despite increasing usage of pesticides. Fortunately, realization of the negative effects of these chemicals on nature and natural resources like pollution, pesticide residue, pesticide resistance etc., has forced many to shift focus on to more reliable, sustainable and environment friendly agents of pest control, the bio-pesticides. So, there is a very urgent need for alternative approaches for maintaining the insect pests. The biopesticides must be evaluated for effective control of the insect pests and along with that sustainable environmental management and maintenance of food quality.